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HHE Report No. HETA-93-0436-2569, Trus Joist MacMillan, Deerwood, Minnesota.

Authors
Piacitelli-C; Jennison-E; Husberg-B
Source
NIOSH 1996 Mar:30 pages
NIOSHTIC No.
00230691
Abstract
In response to an employee request, the development of occupational asthma secondary to exposure to isocyanates was investigated at Trus Joist MacMillan (SIC-2493), Deerwood, Minnesota. The facility employed about 70 workers in the production of parallel strand lumber. Environmental and medical surveys were conducted before and after the institution of major changes in facility ventilation. Monomeric 4,4'-methylenediphenyl-diisocyanate (101688) concentrations in excess of the NIOSH Recommended Exposure Level (REL) of 50 micrograms/cubic meter were identified in two area air samples. Wood dust concentrations exceeded the REL of 1mg/m3 in three areas as well. Respiratory illness meeting the NIOSH case definition of occupational asthma was identified in 18 employees. Half of these cases developed after the institution of the ventilation changes. The authors conclude that a health hazard existed from exposure to isocyanates. The authors recommend that industrial hygiene practices be used to eliminate the hazards, and that a medical monitoring program be instituted.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-93-0436-2569; Hazard-Confirmed; Region-5; Cyanates; Lumber-industry; Wood-dusts; Bronchial-asthma; Occupational-exposure; Industrial-ventilation;
CAS No.
101-68-8;
Publication Date
19960301
Document Type
Hazard Evaluation and Technical Assistance;
Fiscal Year
1996
NTIS Accession No.
NTIS Price
Identifying No.
HETA-93-0436-2569
NIOSH Division
DSHEFS;
SIC Code
2493;
Source Name
Respiratory Disease Hazard Evaluations and Technical Assistance Program, NIOSH, U.S. Department of Health and Human Services, Morgantown, West Virginia, Report No. HETA-93-0436-2569, 30 pages, 49 references
State
MN; VA; WV;
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